Adaptor sleeve



FIG. 1 is a perspective view of an adaptor sleeve showing my design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a section view taken along line 3—3 thereof;

FIG. 4 is a side view thereof; and,

FIG. 5 is a bottom plan view. 

The ornamental design for adaptor sleeve, as shown and described. 